خ ب ثkh-b-th
(ک) خَبُثَ يَخْبُثُ خُبْثًا وَخَبَاثَةًkhabutha yakhbuthu khubthan wa-khabāthatan: to be impure, foul and offensive — the opposite of طَيِّبṭayyib. ﴿وَالَّذِيْ خَبُثَ لَا يَخْرُجُ اِلَّا نَكِدًا﴾ (Al-Aʿrāf 7:58)
خَبِيْثkhabīth pl. خَبِيْثُوْن وَخَبَآئِثkhabīthūn wa-khabāʾith (feminine خَبِيْثَةkhabīthah pl. خَبِيْثٰتkhabīthāt): impure, worthless, unlawful. The lexicographers say that khabīth is applied to everything that is detestable in its essence, speech or action. This root occurs 16 times in the Quran. ﴿اَلْخَبِيْثٰتُ لِلْخَبِيْثِيْنَ﴾ (An-Nūr 24:26); ﴿وَيُحَرِّمُ عَلَيْهِمُ الْخَبٰٓئِثَ﴾ (Al-Aʿrāf 7:157)